-The effects of ionizing radiation in carcinogens have been well documented in atomic bomb survivors, in patients diagnostically exposed, and in industrial workers, scientist, and physicians who were exposed during employment.
-They type of cancer that developed depended on the dose of radiation, the sex of the person, and the age at which exposure occurred.
-can cause mutagenic effects in tees of causing chromosomal breakage, translocations, and, less frequently, point mutations.
Cancer in children is relatively rare.
Usually involve the hematopoietic system, nervous system, soft tissues, bones and kidneys.
A number of childhood cancers are mainly genetic related.
Many childhood cancers are curable.
The number of children who survive are increasing,
Unfortunately, radiation and chemotherapy may produce late sequel, such as impaired growth, neurology dysfunction, hormonal dysfunction, cardiomyopathy, pulmonary fibrosis, and risk for second malignancies.
Vital organs such as the heart and lungs may be affected by cancer treatment.